/* 头部样式 */
header {
    width: 90vw;
    height: 10vh;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding-bottom: 10px;
}
header h1 a {
    color: #000;
}
header ul {
    display: flex;
}
header>ul>li {
    padding: 0 10px;
}
/* 头部样式 end */